If they don´t visit us – let’s go visit them! Find out what happened when four science organisations chose to be temporarily present in local communities, offering free, playful learning opportunities in empty spaces of under-served urban areas, partnering with community organisations. The results were low-tech, low-cost, flexible and fun initiatives that succeeded in engaging new target groups and offered great potential for social advancement. Be inspired by: the “Pop-up Museum” of the Boston Children´s Museum, bringing its mission and activities to a local community; “3-2-1-Ignition*” from Nottingham, exploring a new potential of citizen science; the “Knowledge°Rooms” of the Austrian ScienceCenter-Netzwerk, becoming valued spaces in migrant communities; and “Heureka comes to town” in rural areas of Finland.